[amsat-bb] Modulation levels on AO-85

Ronald G. Parsons w5rkn at w5rkn.com
Sun Aug 13 22:55:03 UTC 2017

I’ve noticed lately that many stations on AO-85 have barely audible modulation. Yet other stations have clear audio with good quieting. I have heard the some manufacturers of hand-held and mobile rigs are setting their maximum deviation to 5 kHz or even less. I have noticed the same effect on local repeaters. Has anyone done any tests of the deviation required for reasonable quieting on AO-85? Or are more stations using lower power than in the past?


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